Title:
METHOD AND APPARATUS OF THE QUANTIZATION MATRIX COMPUTATION AND REPRESENTATION FOR VIDEO CODING
Document Type and Number:
WIPO Patent Application WO/2020/192633
Kind Code:
A1
Abstract:
A method and apparatus for video coding are disclosed. For a current block, a maximum side of the transform block of the current block corresponds to 64. A scaling matrix is derived from elements of an 8x8 base scaling matrix, where the elements in a bottom-right 4x4 region of the 8x8 base scaling matrix are skipped, either not signaled or set to zero. According to another method, a current block belongs to a current picture in a first color format that has only a first color component. A first scaling matrix is signaled at the video encoder side or parsed at the video decoder side for the first color component of the current block. On the other hand, signaling any second scaling matrix is disabled at the video encoder side or parsing any second scaling matrix is disabled at the video decoder side for a second or third color component of the current block.
Inventors:
LAI CHEN-YEN (CN)
CHUANG TZU-DER (CN)
CHEN CHING-YEH (CN)
HSU CHIH-WEI (CN)
HUANG YU-WEN (CN)
CHUBACH OLENA (US)
CHUANG TZU-DER (CN)
CHEN CHING-YEH (CN)
HSU CHIH-WEI (CN)
HUANG YU-WEN (CN)
CHUBACH OLENA (US)
Application Number:
PCT/CN2020/080705
Publication Date:
October 01, 2020
Filing Date:
March 23, 2020
Export Citation:
Assignee:
MEDIATEK INC (CN)
International Classes:
H04N19/124
Foreign References:
| US20180309991A1 | 2018-10-25 | |||
| US20050111554A1 | 2005-05-26 | |||
| US20050163214A1 | 2005-07-28 | |||
| US20190082194A1 | 2019-03-14 | |||
| CN103096056A | 2013-05-08 |
Other References:
BROSS, BENJAMIN; CHEN, JIANLE; LIU, SHAN: "Versatile Video Coding (Draft 3)", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11, no. JVET-L1001, 12 October 2018 (2018-10-12), pages 1 - 154, XP030195441
J. BROSS ET AL.: "Versatile Video Coding (Draft 7", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11, 16TH MEETING: GENEVA, CH, 1 October 2019 (2019-10-01)
See also references of EP 3925217A4
J. BROSS ET AL.: "Versatile Video Coding (Draft 7", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11, 16TH MEETING: GENEVA, CH, 1 October 2019 (2019-10-01)
See also references of EP 3925217A4
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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